# Relume vs Dual N

The clearest difference is in-app purchases: Relume at none against Dual N's 1. Relume also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Dual N sells 1 one-off in-app purchase. Relume asks for nothing beyond the download.

## The numbers

| Metric | Relume | Dual N |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 5 days |
| Size | 3 MB | 13 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [开琼谋 罗](https://appshunter.io/developer/1895202008) | [Takanori Horitsu](https://appshunter.io/developer/1896386009) |

## What reviewers say

### Relume

[App page](https://appshunter.io/ios/app/relume/id6766970375)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Dual N

[App page](https://appshunter.io/ios/app/dual-n-back-brain-trainer/id6767109556)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-Free | $0.99 | one-time |


## Frequently asked questions

### Is Relume free?

Relume is free to download, with no in-app purchases.

### Is Dual N free?

Dual N is free to download, with in-app purchases available.

### Do Relume or Dual N have ads?

Dual N shows ads; Relume does not.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*